package com.hnevc.androiduiclassone8;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        String fileName ="data.txt";
        String content="蒋腾芳";

        FileOutputStream fos;
        try{
            fos =openFileOutput(fileName,MODE_PRIVATE);
            byte[] bytes=content.getBytes();
            fos.write(bytes);
            fos.close();
        }catch (Exception e)
        {
        }

        Log.e("TAG", "onCreate: ====== ");


        FileInputStream fis=null;
        try{
            fis=openFileInput(fileName);
            byte[] buffer =new byte[fis.available()];
            fis.read(buffer);
            String temp=new String(buffer);
            Toast.makeText(this,temp,Toast.LENGTH_SHORT).show();
        }catch (IOException e){
            e.printStackTrace();
        }
    }
}
